Question

Calcule as expressões: A) (9-4+2)-1+(9+5-3) B) 18-[2+(7-3-8)-10] C) -4+[-3+(-5+9-2)] D) -6-[10+(-8-3)-1]

Answer 1

A) (7)-1+(11)=7-1+11=18-1= 17
B) 18-[2+(-4)-10]= 18-[2-4-10]= 18-[-12]= 18+12= 30
C)-4+[-3+(2)]= - 4+[-3+2]= - 4+[-1] = - 4 - 1= - 5
D) - 6-[10+(-11)-1]= - 6-[10-11-1]= - 6-[-2] = - 6+2= - 4

Um abraço.